Positioner
Determines the current position of each particle every frame.
When a chain of blocks is connected to the Positioner, the chain is evaluated every frame and the result is used as the particle's rendering position.
Typically, the Positioner is connected to the output of a Position property block (possibly through a ForceMove or Move block chain), so the particle's visual position follows its simulated position.
If no blocks are connected, particles appear at the origin.
Input:
- Position (input): The 3D position to use for this particle.